The invention discloses a ring-arc-shaped sleeping bag and manufacturing and using methods thereof. A sleeping bag body is composed of an upper portion, a lower portion, a sleeping hood, a hood strip, a hood strip elastic cord, a front opening, a lifting lug, a double-end front fly zipper, a safe fastening loop, a flank vertical lining, a flank partitioning vertical lining, a lower portion vertical lining, an upper portion ring-arc-shaped vertical lining, a flank, a sleeping hood partitioning vertical lining and a sleeping hood flank vertical lining, wherein the sleeping hood is arranged at one end of the sleeping bag body and connected with the sleeping bag body into a whole, the upper portion ring-arc-shaped vertical lining, the lower portion vertical lining, the flank vertical lining, the flank partitioning vertical lining, the sleeping hood partitioning vertical lining and the sleeping hood flank vertical lining are arranged between the shell fabric and lining fabric of the sleeping bag body to form a supporting frame of the sleeping bag body, and the stitching position of the shell fabric intersects with that of the lining fabric, so that wind resistance is improved and filler is evenly distributed and does not separate. The sleeping bag is reasonable in design, novel in structure, attractive in appearance, light, practical, convenient to
package and carry, easy to manufacture, low in cost, economical, comfortable, high in warm keeping capacity, high in air permeability, free of
skin irritation, long in service life and extremely convenient to use and carry.